Home / 13,448.10-18,529.65-9,905.70

Finding the Fourth Proportional to 13,448.10, 18,529.65 and 9,905.70

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Solution

The fourth proportional to 13,448.10, 18,529.65 and 9,905.70 is: 13,648.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.10 : 18,529.65 = 9,905.70 : x
  2. Step 2: Convert to fraction form
    13,448.10/18,529.65 = 9,905.70/x
  3. Step 3: Cross multiply
    13,448.10x = 18,529.65 × 9,905.70
  4. Step 4: Simplify right side
    13,448.10x = 183,549,154.01
  5. Step 5: Solve for x
    x = 183,549,154.01/13,448.10
  6. Step 6: Final answer
    x = 13,648.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.